Results 61 to 70 of about 530,059 (351)
Frontiers in Earth Science, 2023 In this paper, Qinghai alpine mining area is taken as the research object to explore the deformation characteristics of overlying strata in alpine mining area, so as to prevent geological disasters caused by over-exploitation in alpine mining area.
Zhan-Xi Wei +8 more
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Cycles Are Strongly Ramsey-Unsaturated [PDF]
Combinatorics, Probability and Computing, 2014 We call a graph H Ramsey-unsaturated if there is an edge in the complement of H such that the Ramsey number r(H) of H does not change upon adding it to H. This notion was introduced by Balister, Lehel and Schelp in [J. Graph Theory51 (2006), pp. 22–32], where it is shown that cycles (except for C4) are Ramsey-unsaturated, and conjectured that, moreover,
Jozef Skokan, Maya Jakobine Stein
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Advanced Functional Materials, EarlyView.This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li +9 more
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Frontiers in Earth Science, 2023 In order to analyze the deformation of the old goaf in Dameidong Coal Mine and its influence on the surrounding rock and soil layer, it provides guidance for the prevention and control of geological disasters in the region.
Zhan-Xi Wei +9 more
doaj +1 more source
Proceedings of the Nutrition Society, 1999 There is good scientific evidence that dietary fatty acid composition is involved in the aetiology of many diseases. Increasing the supply of n−3 polyunsaturated fatty acids (PUFA) may reduce the risk of CHD. Several scientific organizations (for example, see Department of Health, 1991, 1994; British Nutrition Foundation, 1992; Scientific Committee for
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Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots
Advanced Functional Materials, EarlyView.Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz +11 more
wiley +1 more source
Study of the effect of iodine on the optical properties of unsaturated poly Styrene (PS) [PDF]
مجلة التربية والعلم, 2012 In this work, the effect of iodine (I) impurities on the optical properties of (PS) thin films studied, which prepared by spin coating method on glass Substrates with thickness (40,50,60)µm at room temperature.
Zahra Dabbagh
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Frontiers in Physics, 2022 In this paper proposes a sensitivity analysis method based on a Polynomial Chaos Expansion (PCE) surrogate model for flexoelectric materials. The non-uniform rational B-splines (NURBS) basis functions to discretize the fourth-order partial differential ...
Haozhi Li +16 more
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Nature Communications, 2019 Mass spectrometry-based lipidomics is the primary tool for the structural analysis of lipids but the effective localization of carbon–carbon double bonds (C=C) in unsaturated lipids to distinguish C=C location isomers remains challenging.
Wen-Peng Zhang +5 more
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Effect of fibre treatments on interfacial shear strength of hemp fibre reinforced polylactide and unsaturated polyester composites [PDF]
, 2011 Surface treatment of hemp fibres was investigated as a means of improving interfacial shear strength (IFSS) of hemp fibre reinforced polylactide (PLA) and unsaturated polyester (UPE) composites. Fibres were treated with sodium hydroxide, acetic anhydride,
Alan Fernyhough +5 more
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